466 COMPOSITAE 
1. Inula helénium L. Elecampane. Fig. 5814. 
Inula helenium L. Sp. Pl. 881. 1753. 
e herb up to 2 m. i more mel less tufted from thick roots; stems simple, rarely 
Pasi caees paige 5-5 dm. long including the petiole, ovate to oblong, the margin 
desticulate rough-pubescent above, ak Ba escent beneath; stem-leaves smaller, cordate- 
asping, apex : s 4-5 cm. broad with stout peduncles, terminal, few or solitary ; 
phyllaries in several series, 1.5 to nearly 2 cm. long, the inner oblong, herbaceous at the t 8 
wae — letely foliaceous, a — obtuse or sometimes acute at the apex; ray-flow 
ut 3c tet ng, many, narrow; achen s 5 mm. long, glabrous, the pappus- -bristles longer oe 
the array ‘spreading at ma ei rity. 
Adventive from Eurasia, along Pog ean ok found in the Pacific States in western Oregon, pipe | in the 
taggin Mfg het a stablishe i: southeastern Casta, and south to North Carolina and Missouri July- 
iow Starwor 
121. PLUCHEA Cass. Bull. Soc. Philom. 1817: 31. 1817. 
A genus of about 40 species, in warm regions throughout the world. Beside the following, several others 
occur in the eastern United States. Type species, Conyza marilandica Michx. 
Green annual, glandular and pubescent; leaves mostly oblong-ovate, toothed; pappus-bristles ya oo - tip. 
camphorata. 
Silky- —— shrub; a mostly lance-linear, entire; pappus-bristles dilated at tip, ee in the her- 
aphrodite flower 2. P. sericea. 
1. Pluchea camphorata (L.) DC. Salt-marsh Fleabane. Fig. 5815. 
Br egaren pampharetans L. Pea 1. ed. 2. 1212. 1763. 
DC. Prod. 5: 452. 
oe annual, usually 1 m. high or less, usually branched, leafy, pilose or pilosulose through- 
out with several-celled sordid hairs and gla nd-d: ene heavy-sc ented, the stem striate, usually 
ut. Leaves lance-ob val, 4-15 cm. 1 
- A rs very numerous, r cor 
filiform, with 3-4 short teeth; hermaphrodite s 100 tubular, their teeth glandular 
above ; achenes of pi stig flowers _—e eis cueskitan "of “disk. flowers glabrous or glandu- 
lar ; pappus-bristles not ed above 
n salt marshes and wet ssa aces, Sonoran Zones; pe aig west of the Sierra Nevada from the San Francisco 
Bay region mostly near the coast to Lower California (also on Catalina Taenis east a. Arizona, New meee 
ro oe to the Atlantic coast north to Massachusetts and ‘south into Mexico. Type loc : Virginia. Aug 
2. Pluchea sericea (Nutt.) Coville. Arrow-weed. Fig. 5816. 
Polypappus sericeus Nutt. Journ. Acad. Phila. II. 1: 178. 
Te. 
1848. 
ssarta borealis Torr. & Gray ex A. =. Mem. Amer. cone II. 4: 75. 1849. (Nomen nudum.) 
Satspoaies sestier Coville, Contr. U.S. Nat. Herb. 4: 128. 893. 
ydb. Bull, Tobia phe 154. 1906. 
Slender, dies Sis od shrub up to 5 m. high, essentially silvery-silky throughout, densely ‘leafy. 
Leaves linear-lanc to lanceolate, 1-4.5 ¢ m. long, 2-9 mm. wide, acute or acuminate at each 
end, entire, sessile, leathery, 1-ne rved, the cw lateral veins usually concealed by the tomentum ; 
heads in , terminal, cymose clusters; involucre about 7 om. igh, strongly graduate; outer 
and middle phyllaries trian Br orate to oblong, acute, coriaceous, densely villous especially 
toward margin, the inner linear, thin nner, exsentisity glabrous, “acetate-ciliage at tip, deciduous, 
some or all often purplish-tinged' pistill ate flowers very n ous; hermaphrodite flowers 28 or 
— Sachenel €s glabrous — pus-bristles dilated at tip, salts in the eo hrodite flowers. 
Valle. _. eee ons, Lower Sonoran Zone; from eastern Santa Barbara County in the Cuyama 
“Caltesie ee Low + Calif Island. 
Type locality:  R. County, Califor Ope ~ en ane cegoatee es pages Texas; also on Catalina Islan 
